Forging-machine.



G. :BTMLUNDlx E'ORGING MACHINE. APPLICATION FILED JAN. 15, 190e.

947,96@ Patented Feb. 1, 1910.

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ensrar BERGLUND, or wnnnvaa, nssreiven 'ro navrn canna knrLLErt, or wanna/"fie, swiinniv.

FORGINGfMACHINE.

Application filed January 15, 1568.

Speccaton of Letters Patent.

Patented Feb.. 1l, 1911i. Serial No. 410,961.

To all who/m 'it may concern:

Be it known that I, Gris'rnr BnnoLUNn, a subject of the King of Sweden, residing at Viedevg, in the Kingdom of Sweden, have invented a new and useful Forging-Machine, of which the following is a specification.

rl`his invention relates to a forging machine having a rotatable cam disk of a very peculiar form so that the ends of the d handles ofthe hammers on which the cams work can be held together by bars around the cam disk, which disk relatively to its shaft is movable in the longitudinal direction of the shaft. This machine has also a pole for supporting and feeding the blank, which pole is connected to the shaft of the cam disk in such a way that both are shifted simultaneously in the longitudinal direction of the shaft.

rlhe forging machine is shown on attached drawing, where Figure 1 shows the same in side view, Fig. 2 in plan view and Fig. 3 in end view, the frame being' removed. Figs. 1 and 2 show also by dotted lines the handles of the hammers and the cam disk in the position which the same gets if the cam disk turned 9() degrees, which is also shown in Fig. 3 by dotted lines.

rlhe rotating cam disk 4 is secured on a shaft 5, carried by two bearings, in which the shaft can not only rotate but also be moved in its longitudinal direction. 'lhe shaft 5 is rotated by the pulley and a belt.

Four hammers 2 run in guiders 1 to and fro the forging and these hammers are each rotatorily connected to one end of a handle 21, 22, 23 and 24, journaled in `the fixed frame 3. The other ends of the handles rest against the cam disk 4 either directly or by means of rollers. By the rotation of cam disk 4 the handles 21, 22, 23 and 24 are effected so that the hammers 2 will be put in motion and work upon a blank brought in between them which blank thereby is pressed from four sides, not more however than from two sides at each pressing.

The rotating cam disk 4 is conical and movable in the longitudinal direction of the shaft in order to get different movements of the handles 21, 22, 23 and 24 and consequently also of the hammers 2 and to press the blank more or less hardly along its length, depending upon how the cam disk is shifted in one or the other direction.

The end of the handle 21 on which the cam disk 4 works is connected to corresponding ends of the nearest located, handles 22- and 24 by means of bars which are bent in that way that they do not touch thc cam disk when this rotates. The handle 23 is in the same way connected to the nearest located handles 22 and 24 by means of bars 6 and so on around the cam disk, wherefore the cam disk 4 ought to have such an oval form that the effected ends of the handles located nearest to each other will always be at the same distance from each other and so that when two opposite hammers 2 are moved against the forging the two others are moved from it. The surface of the cam disk may thus not have any square offsets on the cams, which are two in number but the surface ought to be even.

r1 pole Sl is located in front of the hammers and carries the blank. Guiding bars 8 are connected to this pole and to these guiding bars are rotatorily connected two arms 10 turnable about a lifted point 25 (for instance on one of the bearing supports as shown on the drawing), which arms are in their turn connected to the cross piece l2 by means of links 11. This cross piece is journaled between two flanges on the shaft 5 and can thus be moved to and fro by the shaft 5 in the longitudinal direction of this latter. lff theshaft 5 is thus moved forward in its longitudinal direction, the rotating cam disk 4 as well the pole will bc fed forward in the same direction. The points where the links 11 are fastened on the arms 10 are movable, so that it is possible to regulate the speed of the feeding of the pole relatively to that of the cam disk. The cross piece 12 is prevented from rotating 95 with the shaft 5 by the arm 26, projecting from the cross piece and running in a hole in the bearing support.

The :feeding of the pole 9 and the rotating cam disk done in the following manner. @n the outer end of the shaft 5 there is secured a screw 16 and on this latter is threaded a nut 17 cut up and prevented from being displaced in the longitudinal direction of the screw by the fork 27 and which nut when not pressed together, does not cause any feeding of the shaft but does so, when the same is pressed together and catches in the threads of the screw. Screws of different pitch are brought in for different feeding of the shaft, Which is turned around With the pulley. The both halyes of the nut are in the known Way movably arranged in the frame, are kept separated by a spring 28 and can be brought together.

around the screw 16 by means of a lever,

provided with two pieces eut obliquely and clasping the halves ofA the nut. The levers can instead of resting against the periphery of a cam disk rest against the inside of a hollow oon-real cam disk.

Such a forging machine isintended for fabrication in massesl of such articles as ba-yonets, forks, handles and the like of unlike thi'ckness inthe longitudinal direction.

I claim.

In a forging machine, the combination withl a supporting frame of four hammers` arranged in pairs and adapted to move radially, a handle pvotally secured lto each hammer and to the frame, a rotatable cam disk in Contact With the outer end of each handle, spring bars connecting the outer ends of the handles, a shaft upon which the cam disk is iXedly mounted journaledv in the frame and longitudinally movable there in, and means for rotating the shaft and means for moving said shaft longitudinally. In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

GUSTF BERGLUND.

fitnessesf CARL t). SAHLBERG, HJALMAR Zu'rrnns'rnom. 

